FI955584A - Identification of audio activity - Google Patents
Identification of audio activity Download PDFInfo
- Publication number
- FI955584A FI955584A FI955584A FI955584A FI955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A FI 955584 A FI955584 A FI 955584A
- Authority
- FI
- Finland
- Prior art keywords
- vector
- standard
- value
- indicator
- identification
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
Abstract
The detector calculates autocorrelation coefficients, R(k) for a signal. A first vector (RO) is composed from a first series, K = 0 ... (N-q), and a second vector (Rq) is formed from the components, k = q ...N. which are shifted by q relative to the first. The first vector is subtracted from the second to yield a difference vector, delta, R, from which a first standard vector is obtained. A reduced standard is obtained by dividing the first standard vector by a reduction value to give a second indicator. The reduction value is calculated from the energy of the audio signal or the sum of the audio energy and a bottom value, C. The linear combination of the present and previous value give a third indicator and these are measured against a threshold.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9413962A FR2727236B1 (en) | 1994-11-22 | 1994-11-22 | DETECTION OF VOICE ACTIVITY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI955584A0 FI955584A0 (en) | 1995-11-20 |
| FI955584A true FI955584A (en) | 1996-05-23 |
Family
ID=9469024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI955584A FI955584A (en) | 1994-11-22 | 1995-11-20 | Identification of audio activity |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5732141A (en) |
| EP (1) | EP0714088B1 (en) |
| JP (1) | JPH08221097A (en) |
| AT (1) | ATE183598T1 (en) |
| AU (1) | AU698712B2 (en) |
| CA (1) | CA2163295A1 (en) |
| DE (1) | DE69511508T2 (en) |
| ES (1) | ES2136815T3 (en) |
| FI (1) | FI955584A (en) |
| FR (1) | FR2727236B1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19716862A1 (en) | 1997-04-22 | 1998-10-29 | Deutsche Telekom Ag | Voice activity detection |
| US6556967B1 (en) | 1999-03-12 | 2003-04-29 | The United States Of America As Represented By The National Security Agency | Voice activity detector |
| US6381568B1 (en) | 1999-05-05 | 2002-04-30 | The United States Of America As Represented By The National Security Agency | Method of transmitting speech using discontinuous transmission and comfort noise |
| EP1170728A1 (en) * | 2000-07-05 | 2002-01-09 | Alcatel | System for adaptively reducing noise in speech signals |
| EP1304682A1 (en) * | 2000-07-05 | 2003-04-23 | Alcatel | Distributed speech recognition system |
| EP1175058A1 (en) * | 2000-07-21 | 2002-01-23 | Alcatel | Processor system, and terminal, and network-unit, and method |
| US7305099B2 (en) * | 2003-08-12 | 2007-12-04 | Sony Ericsson Mobile Communications Ab | Electronic devices, methods, and computer program products for detecting noise in a signal based on autocorrelation coefficient gradients |
| EP1729410A1 (en) * | 2005-06-02 | 2006-12-06 | Sony Ericsson Mobile Communications AB | Device and method for audio signal gain control |
| CN101983402B (en) * | 2008-09-16 | 2012-06-27 | 松下电器产业株式会社 | Speech analyzing apparatus, speech analyzing/synthesizing apparatus, correction rule information generating apparatus, speech analyzing system, speech analyzing method, correction rule information and generating method |
| US9002030B2 (en) | 2012-05-01 | 2015-04-07 | Audyssey Laboratories, Inc. | System and method for performing voice activity detection |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3919479A (en) * | 1972-09-21 | 1975-11-11 | First National Bank Of Boston | Broadcast signal identification system |
| JPS597120B2 (en) * | 1978-11-24 | 1984-02-16 | 日本電気株式会社 | speech analysis device |
| JPS5672499A (en) * | 1979-11-19 | 1981-06-16 | Hitachi Ltd | Pretreatment for voice identifier |
| GB2139052A (en) * | 1983-04-20 | 1984-10-31 | Philips Electronic Associated | Apparatus for distinguishing between speech and certain other signals |
| US4720802A (en) * | 1983-07-26 | 1988-01-19 | Lear Siegler | Noise compensation arrangement |
| JPS62204652A (en) * | 1986-03-04 | 1987-09-09 | Nec Corp | Audible frequency signal identification system |
| US4815137A (en) * | 1986-11-06 | 1989-03-21 | American Telephone And Telegraph Company | Voiceband signal classification |
| FR2623382B1 (en) * | 1987-11-24 | 1991-05-03 | Peugeot Cycles | DEVICE FOR FIXING A COVERING, IN PARTICULAR A SEAT COVERING |
| DE68929442T2 (en) * | 1988-03-11 | 2003-10-02 | British Telecomm | Device for recording speech sounds |
| US5276765A (en) * | 1988-03-11 | 1994-01-04 | British Telecommunications Public Limited Company | Voice activity detection |
| US5410632A (en) * | 1991-12-23 | 1995-04-25 | Motorola, Inc. | Variable hangover time in a voice activity detector |
-
1994
- 1994-11-22 FR FR9413962A patent/FR2727236B1/en not_active Expired - Fee Related
-
1995
- 1995-11-17 DE DE69511508T patent/DE69511508T2/en not_active Expired - Fee Related
- 1995-11-17 ES ES95402589T patent/ES2136815T3/en not_active Expired - Lifetime
- 1995-11-17 AT AT95402589T patent/ATE183598T1/en not_active IP Right Cessation
- 1995-11-17 EP EP95402589A patent/EP0714088B1/en not_active Expired - Lifetime
- 1995-11-20 US US08/560,645 patent/US5732141A/en not_active Expired - Fee Related
- 1995-11-20 FI FI955584A patent/FI955584A/en unknown
- 1995-11-20 AU AU37937/95A patent/AU698712B2/en not_active Ceased
- 1995-11-20 CA CA002163295A patent/CA2163295A1/en not_active Abandoned
- 1995-11-22 JP JP7304462A patent/JPH08221097A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU698712B2 (en) | 1998-11-05 |
| US5732141A (en) | 1998-03-24 |
| AU3793795A (en) | 1996-05-30 |
| ES2136815T3 (en) | 1999-12-01 |
| JPH08221097A (en) | 1996-08-30 |
| EP0714088B1 (en) | 1999-08-18 |
| CA2163295A1 (en) | 1996-05-23 |
| ATE183598T1 (en) | 1999-09-15 |
| DE69511508T2 (en) | 2000-07-06 |
| FI955584A0 (en) | 1995-11-20 |
| FR2727236B1 (en) | 1996-12-27 |
| DE69511508D1 (en) | 1999-09-23 |
| EP0714088A1 (en) | 1996-05-29 |
| FR2727236A1 (en) | 1996-05-24 |
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